Hexagonally poled lithium niobate: A two-dimensional nonlinear photonic crystal

被引:412
作者
Broderick, NGR [1 ]
Ross, GW [1 ]
Offerhaus, HL [1 ]
Richardson, DJ [1 ]
Hanna, DC [1 ]
机构
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
关键词
D O I
10.1103/PhysRevLett.84.4345
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report on the fabrication of what we believe is the first example of a two-dimensional (2D) nonlinear photonic crystal [Berger, Phys. Rev. Lett. 81, 4136 (1998)], where the refractive index is constant but where the 2nd order nonlinear susceptibility is spatially periodic. Such crystals allow for efficient quasi-phase-matched and harmonic generation using multiple reciprocal lattice vectors. External 2nd harmonic conversion efficiencies >60% were measured with picosecond pulses. The fabrication technique is extremely versatile and should allow for the fabrication of a broad range of 2D crystals including quasicrystals.
引用
收藏
页码:4345 / 4348
页数:4
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